#3F88BC#3F88BC

#3F88BC is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.3% C 0.108 H 242.5°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F88BC
RGB	rgb(63, 136, 188)
HSL	hsl(205, 50%, 49%)
HSV	hsv(205, 66%, 74%)
CMYK	cmyk(66.5%, 27.7%, 0%, 26.3%)
CIE-LAB	lab(54.34, -6.14, -33.87)
CIE-LCH	lch(54.34, 34.42, 259.72°)
OKLab	oklab(60.32% -0.0497 -0.0954)
OKLCH	oklch(60.32% 0.108 242.5)
XYZ	xyz(19.9277, 22.2938, 50.8201)
Luminance	0.2230 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F88BC #BC733F

analogous

#3FBCB2 #3F88BC #3F4ABC

triadic

#3F88BC #BC3F88 #88BC3F

tetradic

#3F88BC #B23FBC #BC733F #4ABC3F

square

#3F88BC #B23FBC #BC733F #4ABC3F

split-complementary

#3F88BC #BC3F4A #BCB23F

monochromatic

#204660 #30678E #3F88BC #6BA4CD #99C0DD

Accessibility & contrast

On white

3.85

#3F88BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#3F88BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F88BC

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F88BC	#FFFFFF	#000000	##000000
##3F88BC	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7189BE

Deuteranopia (green-blind)

#5F7DBB

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3f88bc;
/* rgb */ color: rgb(63, 136, 188);
/* oklch */ color: oklch(60.3% 0.108 242.5);

Tailwind

colors: {
  custom: {
    50: '#81aad0',
    500: '#3f88bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f88bc;
$custom-light: #81aad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f88bc",
  "rgb": {
    "r": 63,
    "g": 136,
    "b": 188
  },
  "hsl": {
    "h": 204.96,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.60324,
    "c": 0.1076,
    "h": 242.5
  },
  "luminance": 0.22296
}

Semantic roles & 50–950 ramp

primary

#3F88BC

secondary

#C9A78E

accent

#884ED9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F88BC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →